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Author 
Date 
Re:  
Phil Davis  14:29 10 Jan 05 
Justin --

To get the best results (and best understanding of BTZS) you should do your own testing and use the Plotter program on your PC to analyze the test data and construct the G-bar vs. developing time charts for the film, developer, and printing paper you plan to use. Theoretically, at least there's a specific development time for each combination of materials and SBR, so unless you're using roll film (in which case BTZS isn't of much value) no single time recommendation is very useful.

Having said that, it's usually possible to get good results with BTZS methods by using other photographers' chart data and there's a lot of that information out there. One pretty good starting point is the "Library of Film Curves" article in the View Camera Store's newsletter, D-Max, April 2002, volume 9, issues 1 & 2. Check with Dennis or Fred at info@viewcamerastore.com to see if that back issue is still available.

This article doesn't include some of the combinations you're requesting, and the tests were completed before Kodak released the new films but the chart data are still useful, if not ideal. It's generally necessary to make some adjustment in "borrowed" data but this information should help get you started.
 
Metering question 
Mark  6:49 7 Jan 05 
Re: Metering question 
Jorge Gasteazoro  14:52 7 Jan 05 
Re: Metering question 
Mark  7:56 8 Jan 05 
Densitometer and scanner 
Dan  2:54 14 Dec 04 
Re: Densitometer and scanner 
Phil Davis  7:15 14 Dec 04 
Re: Densitometer and scanner 
Dan  12:17 14 Dec 04 
Incident Metering Question 
Ross Borgida  6:54 26 Nov 04 
Re: Incident Metering Question 
Jorge Gasteazoro  10:45 26 Nov 04 
Re: Incident Metering Question 
Ross Borgida  10:51 26 Nov 04 


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